/**
 * BibSonomy-Webapp - The web application for BibSonomy.
 *
 * Copyright (C) 2006 - 2016 Knowledge & Data Engineering Group,
 *                               University of Kassel, Germany
 *                               http://www.kde.cs.uni-kassel.de/
 *                           Data Mining and Information Retrieval Group,
 *                               University of Würzburg, Germany
 *                               http://www.is.informatik.uni-wuerzburg.de/en/dmir/
 *                           L3S Research Center,
 *                               Leibniz University Hannover, Germany
 *                               http://www.l3s.de/
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.bibsonomy.webapp.validation;

import org.bibsonomy.model.Group;
import org.bibsonomy.webapp.util.Validator;
import org.springframework.util.Assert;
import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;


/**
 *
 * @author niebler
 */
public class GroupValidator implements Validator<Group> {
	
	@Override
	public boolean supports(Class<?> clazz) {
		if (clazz != null) {
			return Group.class.isAssignableFrom(clazz);
		}
		return false;
	}

	@Override
	public void validate(Object target, Errors errors) {
		final Group group = (Group) target;
		Assert.notNull(group);
		
		ValidationUtils.rejectIfEmptyOrWhitespace(errors, "name", ERROR_FIELD_REQUIRED_KEY);
		if (!errors.hasFieldErrors("name")) {
			UserValidator.validateName(group.getName(), errors, "error.field.valid.user.name"); 
		}
	}
}
